Related Experiment Videos
Outcome in medically treated coronary artery disease. Ischemic events: nonfatal infarction and death
Insights
This study analyzed 1214 coronary disease patients, finding 47% experienced ischemic events (nonfatal infarction or death) within 7 years. Progressive chest pain and left ventricular function significantly predicted outcomes.
Area of Science:
- Cardiology
- Clinical Medicine
- Epidemiology
Background:
- Coronary artery disease (CAD) management relies on understanding long-term outcomes.
- Characterizing ischemic events, including nonfatal myocardial infarction and death, is crucial for risk stratification.
Purpose of the Study:
- To extend the outcome characterization in medically treated CAD patients.
- To identify independent predictors of ischemic events over a 7-year period.
Main Methods:
- Analysis of 1214 medically treated patients with coronary disease.
- Combined endpoint of nonfatal infarction and death as ischemic events.
- Multivariable analysis of 81 baseline clinical and catheterization descriptors.
Main Results:
- Cumulative 7-year event rate was 47% (18% nonfatal infarction, 29% death).
- Eleven baseline descriptors (6 clinical, 5 catheterization) independently predicted events.
- Progressive chest pain, number of diseased vessels, left main stenosis, and left ventricular (LV) function were key predictors.
- Nonfatal infarction predominated in patients with 1-3 vessel disease and normal LV function.
- Death was the predominant event in patients with left main disease or severe LV dysfunction.
Conclusions:
- The natural history of CAD is influenced by specific clinical and angiographic factors.
- Risk stratification for ischemic events can be improved by considering factors like chest pain and LV function.
- Understanding event patterns based on disease severity and LV function aids in personalized treatment strategies.
Abstract:
In this study we extended the characterization of outcome in 1214 medically treated patients with coronary disease by considering nonfatal infarction and death together as ischemic events. At 7 years, the cumulative event rate was 47% (18% for nonfatal infarction as the initial event and 29% for death as the initial event). In multivariable analysis of 81 baseline descriptors, 11 (six clinical and five catheterization) were independent predictors of events. Progressive chest pain, number of diseased vessels, left main stenosis and left ventricular (LV) function were the most important predictors. Progrressive pain was a more important predictor of total events than of survival alone. In patients with one-, two- or three-vessel disease and normal LV function, nonfatal infarcation accounted for at least 50% of initial events. In patients with left main disease or severe LV dysfunction, death was the predominant event. These results have important implications for interpreting the natural history of coronary artery disease.